UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 ================================================================== BUG: KASAN: slab-out-of-bounds in MON_OFF2HDR drivers/usb/mon/mon_bin.c:207 [inline] BUG: KASAN: slab-out-of-bounds in mon_bin_flush+0x26f/0x290 drivers/usb/mon/mon_bin.c:884 Read of size 8 at addr ffff88803861bd78 by task syz-executor.1/9276 CPU: 1 PID: 9276 Comm: syz-executor.1 Not tainted 6.0.0-rc5-syzkaller-00025-g3245cb65fd91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 MON_OFF2HDR drivers/usb/mon/mon_bin.c:207 [inline] mon_bin_flush+0x26f/0x290 drivers/usb/mon/mon_bin.c:884 mon_bin_ioctl+0xaab/0xcc0 drivers/usb/mon/mon_bin.c:1060 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff288289409 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff2893f3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff28839bf80 RCX: 00007ff288289409 RDX: 0000000000000006 RSI: 0000000000009208 RDI: 0000000000000003 RBP: 00007ff2882e4367 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc26d8b18f R14: 00007ff2893f3300 R15: 0000000000022000 Allocated by task 20017: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc mm/kasan/common.c:516 [inline] ____kasan_kmalloc mm/kasan/common.c:475 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:525 kmalloc include/linux/slab.h:605 [inline] tomoyo_realpath_from_path+0xc3/0x620 security/tomoyo/realpath.c:254 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x272/0x380 security/tomoyo/file.c:771 tomoyo_file_open security/tomoyo/tomoyo.c:320 [inline] tomoyo_file_open+0x9d/0xc0 security/tomoyo/tomoyo.c:315 security_file_open+0x45/0xb0 security/security.c:1646 do_dentry_open+0x349/0x13a0 fs/open.c:865 do_open fs/namei.c:3557 [inline] path_openat+0x1c92/0x28f0 fs/namei.c:3691 do_filp_open+0x1b6/0x400 fs/namei.c:3718 do_sys_openat2+0x16d/0x4c0 fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_sys_openat fs/open.c:1343 [inline] __se_sys_openat fs/open.c:1338 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1338 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 20017: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:367 [inline] ____kasan_slab_free+0x166/0x1c0 mm/kasan/common.c:329 kasan_slab_free include/linux/kasan.h:200 [inline] slab_free_hook mm/slub.c:1754 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1780 slab_free mm/slub.c:3534 [inline] kfree+0xe2/0x580 mm/slub.c:4562 tomoyo_realpath_from_path+0x191/0x620 security/tomoyo/realpath.c:291 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x272/0x380 security/tomoyo/file.c:771 tomoyo_file_open security/tomoyo/tomoyo.c:320 [inline] tomoyo_file_open+0x9d/0xc0 security/tomoyo/tomoyo.c:315 security_file_open+0x45/0xb0 security/security.c:1646 do_dentry_open+0x349/0x13a0 fs/open.c:865 do_open fs/namei.c:3557 [inline] path_openat+0x1c92/0x28f0 fs/namei.c:3691 do_filp_open+0x1b6/0x400 fs/namei.c:3718 do_sys_openat2+0x16d/0x4c0 fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_sys_openat fs/open.c:1343 [inline] __se_sys_openat fs/open.c:1338 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1338 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88803861a000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 3448 bytes to the right of 4096-byte region [ffff88803861a000, ffff88803861b000) The buggy address belongs to the physical page: page:ffffea0000e18600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x38618 head:ffffea0000e18600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000001 ffff888011842140 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5904, tgid 5904 (kworker/1:11), ts 440266139996, free_ts 439184109235 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5515 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:1824 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1969 new_slab mm/slub.c:2029 [inline] ___slab_alloc+0x7f1/0xe10 mm/slub.c:3031 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118 slab_alloc_node mm/slub.c:3209 [inline] __kmalloc_node_track_caller+0x2f2/0x380 mm/slub.c:4955 kmalloc_reserve net/core/skbuff.c:362 [inline] __alloc_skb+0xd9/0x2f0 net/core/skbuff.c:434 alloc_skb include/linux/skbuff.h:1257 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:742 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:799 [inline] nsim_dev_trap_report_work+0x2ad/0xc50 drivers/net/netdevsim/dev.c:844 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x19/0x4d0 mm/page_alloc.c:3476 __folio_put_large mm/swap.c:118 [inline] __folio_put+0x105/0x130 mm/swap.c:126 folio_put include/linux/mm.h:1125 [inline] put_page include/linux/mm.h:1177 [inline] __skb_frag_unref include/linux/skbuff.h:3380 [inline] skb_release_data+0x51e/0x870 net/core/skbuff.c:685 skb_release_all net/core/skbuff.c:756 [inline] __kfree_skb net/core/skbuff.c:770 [inline] napi_consume_skb net/core/skbuff.c:1008 [inline] napi_consume_skb+0x1a1/0x280 net/core/skbuff.c:990 skb_defer_free_flush net/core/dev.c:6659 [inline] net_rx_action+0x342/0xd90 net/core/dev.c:6680 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571 Memory state around the buggy address: ffff88803861bc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803861bc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88803861bd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88803861bd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803861be00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================